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LED????????????

Old Dec 19, 2010 | 03:18 PM
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LED????????????

I have been told you can not put led's on our trucks without a voltage box Is this true I am thinking about going with all led's Can it be done ?
 
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Old Dec 19, 2010 | 03:36 PM
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Yes it can be done. I have LED tail lights so my blinker blinks fast but I don't care since I don't have to worry about the tail lights going out so fast because of the beeting the rear end takes from bouncing around.
Now when I connect trailor lights they blink normal.
So yea, if the lights are designed for going on a vehicle or the setup is designed for 12v then yea.
 
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Old Dec 19, 2010 | 03:53 PM
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Ok thanks what causes the blinkers to blink fast? Can it be fixed?
 
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Old Dec 19, 2010 | 04:10 PM
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im not sure if this is correct but it is probly because the LEDs take less voltage to work then the factory tail lights do.
 
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Old Dec 19, 2010 | 04:30 PM
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Add a 2 ohm resistor to it for regular blink speed, Lack of resistance causes them to blink fast. Same as when bulb blows.
 
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Old Dec 19, 2010 | 04:51 PM
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Originally Posted by SLAMMIN 22
Ok thanks what causes the blinkers to blink fast? Can it be fixed?
The flasher relay can be upgraded so they blink at a more normal rate.
 
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Old Dec 19, 2010 | 04:58 PM
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What kind of relay do I need? THANKS FOR THE REPLIES
 
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Old Dec 19, 2010 | 05:03 PM
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Originally Posted by bigbubba87
im not sure if this is correct but it is probly because the LEDs take less voltage to work then the factory tail lights do.
Is it the lack of resistance or the amount of current draw?

I'm betting it's how much current is being drawn that determines blinker speed.
Personally I like the fast blinker speed as it has a tenancy to get people's attention faster and since I drive a bit fast and turn a bit fast it helps me out and when I'm pulling a trailer it blinks like normal and well I don't go speeding around when pulling anything.
 
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Old Dec 19, 2010 | 05:14 PM
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Originally Posted by Visseroth
Is it the lack of resistance or the amount of current draw?

I'm betting it's how much current is being drawn that determines blinker speed.
Both.

Higher resistance, less current, slower blink.

Lower resistance, more current, faster blink.
 
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Old Dec 19, 2010 | 08:51 PM
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what type of tail lights?? I installed Recon and all is normal....
 
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Old Dec 19, 2010 | 09:03 PM
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Originally Posted by PaysonPSD
Both.

Higher resistance, less current, slower blink.

Lower resistance, more current, faster blink.
Oh, yea, no kidding huh? or maybe I should say... DAH! I didn't think of it that way, LOL
 
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Old Dec 19, 2010 | 09:14 PM
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That makes sense. I never thought of it that way either. I just knew that a regular 1157 bulb is about 2 ohms resistance. On the service body I used to have , the fast blink drove me crazy and it was really cheap to stop by the shack and add the resistor. I never priced the flasher relay but just figured it was more than the $1 I paid at the shack.
 
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Old Dec 19, 2010 | 09:23 PM
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The flasher relay is right behind the heater controls or just below. Not that easy to get to.
 
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Old Dec 19, 2010 | 09:34 PM
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Originally Posted by SLAMMIN 22
What kind of relay do I need? THANKS FOR THE REPLIES
On a '99 to '01 under dash fuse position #1 is actually the flasher relay. Pull it and take to an auto parts store and see if they have a heavy duty replacement. Let them know you have a fast blink. Most places should have one that will handle more current. Fast blink is a common problem for those towing trailers wth light duty trucks or passenger cars. Wish I had a part number for you.

Edit: Was doing a search for LED lights and one site mentioned LED flashers so they must be available.
 
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